package cn.lhjl.day04.Usb接口案例;

public class Keyboard implements Usb {
    @Override
    public void open() {
        System.out.println("键盘连接");
    }

    @Override
    public void close() {
        System.out.println("键盘断开");
    }
    public void type(){
        System.out.println("键盘输入");
    }
}
